Beam lock for looms



ffl (l Patented May 19, 1925.

UNITED. STATES `JNAS NORTHROP, OF HOPEDALE, MASSACHUSETTS, ASSIGNOR TO HOPEDALE MANU- FACTURING coivirANY, or'

MASSACHUSETTS.

MILFORD, 'MASSACHUSETTS, A CORPORATION OF BEAM LOCK FOR LOOMS.

Application filed June 27, 1923. Serial No. 648,003.

To all whom t may concern.'

Pie it known that I, Jonas NonTHnor, a citizen of the United States, residing at Hopedale, in thecounty of Worcester and State of lifassachusetts, have invented certain new and useful Improvements in Beam flocks for Looms; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable. others skilled in the art to which it appertains to make and use the same.

The present invention relates to an improvement in beam locks. e

rl`he object ofthe invention is to provide a simple and ellicient beam lock for locking warn beams in place on looms. The invention consists in the lock hereinafter described and particularly denedV in the claims.

ln the accompanying drawings illustrating the preferred form of the invention, F 1 is a rear elevation of a part of a loom showingthe beam lock in place; Fig. f2 is a side elevation of the beam lock; and Fic'. 3 is a plan of the same.

rf he illustrated embodiment of the invention is described as follows: 0n the frame il of the loom is mounted the seat 2, being secured thereto by means of a bolt The seat 2 has a bracket or arm 4f which extends rearwardly and is provided at its end with a pivot pin 5 to which is attached the bolt The seat 2 is provided with a recess 10 to receive the zgudgeon 11 of the warp beam. The bracket 11 is provided with an inclined face 1Q down which the gudgeon of the warp beam is adapted to roll into the gnd- ,an-ion re;ess 10.v T he bracket is also provided with a second inclined portion 13 farther out down which the beam will roll to the stop 1st. This portion 13 is the portion upon which the beam is first placed when it is inserted in the loom. Then the bolt 6 is turned upwardly from the depending position shown in dotted lines and the recessed end 15 of the bolt is placed against the gudgeon and an upward pull is exerted upon the handle 16 of the bolt, which is forced inwardly by the cam action of the stud 5 acting on the portion 17 of the wall of the slot 18 in the bolt. This forces the bolt forwardly thereby pushing the gudgeon over the stop lll. Continued lifting of the handle 1G of the bolt pushes the gudgeon forward until the lowest part 19 of the slot 18 is reached, when the handle of the bolt is forced downwardly, thereby crowdingl the inclined side 2O of the slot against the stud 5 and forcing the bolt forward as far as the gudgeon will permit. This inclined surface 2O is such that the weight of the bolt will hold it in forward position and no pressures which the gudgeon may bring to beaigupon the bolt will be sul'licient to loosen The bolt is therefore a seltlocking` bolt which combines in function a device for forcing the gudgeon back into its recess and locking it in such position after it has been seated. The cam path 18 serves not only to permit the bolt to be dropped into the dotted line position so that it is out of the way for the entering warp beam, but also affords cam surfaces by which it is pressed forward when the handle of the bolt is raised and locked in forward position by the inclined portion which engages the stud after it is permitted again to be turned downwardly when the lowest por-y tion of the curved slot stud 5.

The seat is preferably made separate from the loom frame, although it is within the purview of the invention to make the seat integral therewith.

lfilhile the bracket may be provided with a stop as show-n, it is within the purview of the invention, viewed in its broader aspects, to make the bracket without such stop.

It is immaterial to the invention whether the bolt be provided with a slot and the bracket with a stud, or whether equivalent means be employed. Thus it is regarded as within the scope `of shape the bolt and bracket that the bolt and bracket act to force the bolt forward when the bolt is lifted. and afterward to force the bolt forward by its weightwhen it has reached locked position.

Having thus described the invention, what is claimed is:

1. A beam lock for looms having, in coinbination, a seat having,` a bracket and a bolt, the boltand bracket having cooperatingv parts formed to force the front end of the bolt into locking position when the bolt is shall have passed the .raised during a portion of the forward the invention to so i movement of the bolt, and to force the bolt into locking position when the bolt is depressed during the latter part of its forward movement.

2. A beam lock for loomehaving, in combination, a seat provided with a bracket carrying a stud, a bolt having a slot to receive the stud, the slot in the bolt extending from the front end in a rearwardly direction, thence downward and lastly upward in an inclined direction.

3. A beam lock` for looms having, in combination, aseat provided with abracket, a stud on the bracket, a bolt the front end of' which ieadapted to engage the gudgeon of the beam loel, the bolt being provided with a slot to receive the stud, euch slot extend'- ing :trom the front end of the bolt rearwardly and thence in a curvilinear direction downwardly and lastly in an upwardly inclined direction to lock the bolt in place.

4. A beam lock for looms having, in combination, a seat, a stud supported from the seat, a bolt provided with an elongated slot provided with an` inclined portion to engage the stud and acting by virtue of the weight of the bolt to force the bolt forward and hold the gudgeon in locked position inr the Seat.

5. A beam lock for looms having, in combination, a seat, a bracket having inclined portions for supporting and guiding the gudgeon of the warp beam with a stop between, a bolt having a slot extending from the forward end thereof rearwardly, downwardly and upwardly, the first portion of the slot providing for permitting the bolt to hang from the stud out `ofthe way when a warp beam is inserted in the loom, the second portion of the slot providing a cam for forcing the beam forward over the sto-p when the bolt is raised, and the third portion of the slot providing for locking' the gudgeon in place in the seat by the weight Off the bolt. v

6. A beam lock having, in combina-tion, a seat, a stud supported from the seat, a bolt provided with an elongated slot provided with an inclined portion to engage the stud and acting by virtue of the weight of the bolt to force the bolt into engagement with the gudgeon and hold it locked in the seat.

7. A beam lock for looms having in combination, a seat, a stud' supported from the seat, a single bolt having a, slot engaging the stud provided with an inclined portion to engage the stud acting by virtue Vof the weight of the bolt to force they bolt into engagement with the gudgeon and hold it locked in the seat.

JONAS NORTI-IROP 

